Topological Entanglement-Spectrum Crossing in Quench Dynamics.

  title={Topological Entanglement-Spectrum Crossing in Quench Dynamics.},
  author={Zongping Gong and Masahito Ueda},
  journal={Physical review letters},
  volume={121 25},
We unveil the stable (d+1)-dimensional topological structures underlying the quench dynamics for all of the Altland-Zirnbauer classes in d=1 dimension, and we propose to detect such dynamical topology from the time evolution of entanglement spectra. Focusing on systems in classes BDI and D, we find crossings in single-particle entanglement spectra for quantum quenches between different symmetry-protected topological phases. The entanglement-spectrum crossings are shown to be stable against… 

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